Appeal No. 1998-3154
Application No. 08/277,937
adding an organic solvent and a non-volatile
aliphatic polyether to a higher-viscosity basecoat composition
so as to produce a lower-viscosity basecoat composition, said
higher-viscosity basecoat composition being suitable for
producing a polyether-free, lower-viscosity basecoat
composition and said non-volatile aliphatic polyether
containing at least one hydroxyl group per molecule, having a
mean molecular weight not less than about 300 and being
present in an amount from about 6 to about 10 weight percent
of the total weight of the volatile and non-volatile
components;
applying the polyether-containing, lower-viscosity
basecoat composition to a substrate;
allowing a flash-off period to occur without baking;
overcoating the coated substrate with a clearcoat;
and
baking the overcoated substrate to produce a
multicoat finish such that said finish has a metallic
appearance equal to that of a metallic finish prepared from
the polyether-free, lower-viscosity basecoat composition.
The examiner relies upon the following references as
evidence of obviousness:
Benefiel et al. 3,639,147 Feb. 1, 1972
(Benefiel)
Backhouse 4,220,679 Sep. 2, 1980
Garner 4,333,845 Jun. 8, 1982
Kordomenos et al. 4,694,051 Sep. 15, 1987
(Kordomenos)
Appellants' claimed invention is directed to a method of
coating a substrate by utilizing a basecoat composition
comprising a non-volatile aliphatic polyether. The basecoat
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